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Vastus AI-lt

In Go, it is possible to directly modify the contents of variables of the following types without using pointers:

  • Primitive types: int, float64, bool, string (although strings in Go are immutable, new values can be assigned)
  • Arrays (if they are not passed by pointer)
  • Structures (if they are not passed by pointer)

For example, if you have a variable of type int or a structure, you can modify its fields or value directly:

var x int = 10
x = 20 // direct modification

type Point struct {
    X, Y int
}

p := Point{X: 1, Y: 2}
p.X = 5 // direct modification of the structure's field

Pointers are needed when you want to change the value of a variable passed to a function or work with large structures without copying.